EP0310469A1 - Schutzschalter mit Blende zum Unterbrechen des Lichtbogens - Google Patents

Schutzschalter mit Blende zum Unterbrechen des Lichtbogens Download PDF

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Publication number
EP0310469A1
EP0310469A1 EP88402235A EP88402235A EP0310469A1 EP 0310469 A1 EP0310469 A1 EP 0310469A1 EP 88402235 A EP88402235 A EP 88402235A EP 88402235 A EP88402235 A EP 88402235A EP 0310469 A1 EP0310469 A1 EP 0310469A1
Authority
EP
European Patent Office
Prior art keywords
screen
contacts
rocker
contact
opening
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP88402235A
Other languages
English (en)
French (fr)
Other versions
EP0310469B1 (de
Inventor
André Cheurlin
Patrick Comtois
Jean-Christophe Deschamps
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Telemecanique SA
Original Assignee
Telemecanique Electrique SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Telemecanique Electrique SA filed Critical Telemecanique Electrique SA
Publication of EP0310469A1 publication Critical patent/EP0310469A1/de
Application granted granted Critical
Publication of EP0310469B1 publication Critical patent/EP0310469B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/32—Insulating body insertable between contacts

Definitions

  • the present invention relates to a single-pole or multi-pole protective electrical switch device enabling a power cut following an automatic triggering in the event of a short-circuit overcurrent or an opening by manual control and comprising in a housing: - at least one fixed contact and one mobile contact, - a movable arm carrying the movable contact and resiliently biased in the direction of closing the contacts, a triggering member actuating in response to a short-circuit overcurrent, an automatic triggering lock cooperating with the contact-carrying arm to cause the latter to move in the direction of opening of the contacts, - a movable arc cut-out screen occupying a rest position towards which it is returned by a spring and being driven by the triggering member in response to a short-circuit overcurrent to interpose between the contacts, - A manual control member connected to a drive member cooperating with the contact carrier arm to drive by movement of the control member a movement of the arm in the direction of opening of the contacts.
  • Such a switch device known as an arc cut-off screen is described in patent FR-2 577 712.
  • This device is a circuit breaker, the role of which is to electrically isolate and protect a feeder assembly against short-circuits. motor (contactor, thermal relay).
  • the arc cut-off screen is not requested by the automatic tripping device on short-circuit only from the trip threshold thereof and therefore only participates in the cut-out in the event of a short-circuit.
  • the object of the present invention is in particular to request the same arc cut-off screen both during automatic triggering at high overcurrents, that is to say for short-circuit currents, as during opening by manual control at low currents, i.e. both for overload currents and for currents of value less than or equal to that of the rated current of the device.
  • Another purpose is to prevent, during manual opening, the unlocking of the mechanical lock of the device, which advantageously makes it possible to dispense with the rearming thereof following manual opening.
  • a protective switch device of the type described above is more particularly charac terized in that it comprises a screen drive member in the event of manual opening, subject to the manual control member and connected to the screen to drive the latter against its spring reminder during manual opening, so that the screen is interposed between the contacts.
  • the proposed solution thus makes it possible to benefit from the action of the screen thanks to a simple mechanical connection between the manual control member and the screen, in order to promote cutting during manual opening.
  • the screen drive member in the event of manual opening is constituted by a projecting finger which is formed on a movable rocker driven by the manual control member and which cooperates during manual opening with a shoulder provided on the screen.
  • said shoulder is preferably formed on the periphery of the screen.
  • an intensity threshold switching device designated by the general reference 10
  • a housing 11 in which are housed at least one fixed contact 12 and a movable contact 13 carried by a contact arm 14 which is pivotally mounted on a bearing 15 of axis A1 in the housing 11 and is biased in the closing direction contacts by a not shown return spring.
  • the fixed contact 12 is connected to an input terminal 16 via an electrical connection 17 comprising a coil 18 belonging to an electromagnet which constitutes the automatic short-circuit tripping member 19 of the device in question, while the movable contact 13 is connected by a conductive link 20 to an output terminal 22.
  • a magnetic core 24 shaped as a plunger which is capable of actuating in the attracted position following a short circuit a trip lock shown diagrammatically in 25 acting on the contact carrying arm 14 in the opening direction of the contacts (figure 2).
  • the rotary screen 27 is directly hung on a tail 29 of the plunger core 24 and can be propelled by the latter against a return spring shown diagrammatically at 30 under the action of the plunger core during a short circuit.
  • a manual control button 32 located outside the housing 11 cooperates with a control rocker 33 of the contact carrier arm; the button is pivotally mounted around an axis A2 perpendicular to the axis A1, while the rocker is pivotally mounted on a bearing 34 of axis A3 parallel to the axis A1.
  • a mechanical link suitable for engagement and / or cam makes it possible to transform the rotary movement of the button 32 into a correlative rotary movement of the rocker 33.
  • the rocker 33 comprises a cavity with two notches 33a, 33b intended for cooperate with a connecting piece 36 carrying pins 36a, 36b; the part 36 is capable of rotating around the axis A2 in response to the pivoting of the button 32 and for this purpose it has a square 36c cooperating with a recess 32a of the button 32.
  • the rocker 33 has a projection or other support element 38 capable of being applied to the contact-carrying arm 14 to cause the latter to move in the opening direction of the contacts in response to the pivoting of the rocker under the action of the button. 32 during a manual opening command ( Figure 3).
  • a drive element 39 intended to cooperate with the screen 27 during the pivoting of the rocker in the event of manual opening in order to rotate the screen 27 in the direction of its interposition between the contacts.
  • This drive element 39 is presently produced in the form of a projecting finger which is applied against a shoulder 27a provided on the periphery of the screen 27 in response to the pivoting of the rocker 33 following manual opening so to drive the screen against its return spring 30 until the interposition of said screen between the contacts ( Figure 3).
  • the finger 39 of the rocker 33 is moreover shaped so as to be in engagement with the screen 27 during the entire stroke of the rocker between the extreme closed and open positions of the contacts.
  • the support element 38 and the drive finger 39 of the rocker 33 are arranged relative to each other so that the pivoting of the rocker during a manual opening command first causes separation contacts by means of the support element 38, then the interposition of the screen 27 between the contacts opened by means of the drive finger 39.
  • the switch device 10 described above operates as follows:
  • the button 32 capable of rotation about the axis A2 occupies the on position (denoted “1" in FIG. 5) and cooperates via the connecting piece 36 stud 36a, 36b with the notch imprint 33a, 33b of the rocker 33.
  • the finger 39 of the rocker 33 is not applied in the closed position against the shoulder 27a of the screen 27.
  • the apparatus reaches the trigger position shown in FIG. 2 when a short-circuit current flows through the coil 18 of the trigger electromagnet 19.
  • the plunger core 24 is then attracted and moves to the left against a return spring shown diagrammatically at 40 by actuating the lock 25, which lock rotates the contact-carrying arm 14 counterclockwise, and by rotating the screen 27 which is interposed between the fixed 12 and movable contacts 13 in order to favor the cutting of the arc.
  • the device is put in the open position (figure 3) when the operator turns the button 32 around the axis A2 to carry it from the on position to the off position (noted "0" in Figure 5).
  • the rotation of the button 32 is then 90 ° but can of course be carried out on a different angle.
  • the rotation of the button 32 from “1" to “0” determines the rotation around the axis A2 of the connecting piece 36 whose pin 36a engages in the notch 33b of the imprint of the rocker 33. It results in a counterclockwise pivoting of the rocker 33 about the axis A3 during which, on the one hand, the support element 38 causes a counterclockwise pivoting of the contact-carrying arm 14 and, on the other hand, the finger 39 is in abutment against the shoulder 27a of the screen and drives clockwise the rotary screen 27 which is interposed at the end of pivoting of the rocker 33 between the fixed 12 and movable 13 contacts to promote breaking of the arc. Despite the reverse rotational movements of the rocker 33 and the screen 27, the finger 39 of the rocker 33 remains engaged in the shoulder 27a of the screen 27 at the end of pivoting of the rocker (see FIG. 3).
  • resetting (figure 4) is carried out by rotating the button 32 counterclockwise beyond position "0" in figure 5 to the position marked “RESET” in the same figure .
  • the plunger core 24 and the screen 27 (in solid lines in FIG. 4) having returned to their rest position, this rotation of the button 32 causes the rocker 33 to rotate counterclockwise, including the finger 39, illustrated in phantom in FIG. 4, is applied against the shoulder 27a of the screen 27 and drives the latter clockwise to the position illustrated in phantom in Figure 4, and the support element 38 of which causes an angular displacement of the support arm -contact 14 slightly greater than that of said arm in the event of manual opening, authorizing the resetting of lock 25.
  • the manual control of the contact arms or bridges 14 of the various poles is carried out from the button 32 on as many rockers 33 as there are poles, the rockers 33 being coupled together .

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  • Breakers (AREA)
EP19880402235 1987-10-02 1988-09-06 Schutzschalter mit Blende zum Unterbrechen des Lichtbogens Expired - Lifetime EP0310469B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8713621 1987-10-02
FR8713621A FR2621418B1 (fr) 1987-10-02 1987-10-02 Interrupteur de protection a ecran de coupure d'arc

Publications (2)

Publication Number Publication Date
EP0310469A1 true EP0310469A1 (de) 1989-04-05
EP0310469B1 EP0310469B1 (de) 1992-10-21

Family

ID=9355449

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880402235 Expired - Lifetime EP0310469B1 (de) 1987-10-02 1988-09-06 Schutzschalter mit Blende zum Unterbrechen des Lichtbogens

Country Status (3)

Country Link
EP (1) EP0310469B1 (de)
DE (1) DE3875446T2 (de)
FR (1) FR2621418B1 (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112050A1 (fr) * 2004-04-19 2005-11-24 Soule Protection Surtensions Dispositif de protection contre les surtensions pourvu de moyens de coupure d’arc
EP2466601A1 (de) * 2010-12-20 2012-06-20 Schneider Electric Industries SAS Unterbrechungsvorrichtung mit Monitor mit Lichtbogenunterbrechung
WO2015058501A1 (zh) * 2013-10-23 2015-04-30 通能顺达科技国际有限公司 一种同步绝缘分隔电力开关装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19726402B4 (de) * 1997-06-21 2009-03-05 Marquardt Gmbh Elektrischer Schalter
DE19735521A1 (de) * 1997-08-16 1999-02-18 Kloeckner Moeller Gmbh Lichtbogenlöscheinrichtung für einen kurzschlußstrombegrenzenden Niederspannungsschalter
DE102018108369A1 (de) * 2018-04-09 2019-10-10 Soulsurf Gmbh Lasttrennschalter und anordnung mit einem lasttrennschalter

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0189689A1 (de) * 1984-12-28 1986-08-06 Telemecanique Elektrischer Schalter mit Blende
EP0193440A1 (de) * 1985-02-14 1986-09-03 Telemecanique Schutzschalter
FR2596916A1 (fr) * 1986-04-04 1987-10-09 Telemecanique Electrique Disjoncteur bipolaire a ouverture automatique ou manuelle avec electro-aimant bistable et noyau percuteur magnetisable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0189689A1 (de) * 1984-12-28 1986-08-06 Telemecanique Elektrischer Schalter mit Blende
EP0193440A1 (de) * 1985-02-14 1986-09-03 Telemecanique Schutzschalter
FR2596916A1 (fr) * 1986-04-04 1987-10-09 Telemecanique Electrique Disjoncteur bipolaire a ouverture automatique ou manuelle avec electro-aimant bistable et noyau percuteur magnetisable

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005112050A1 (fr) * 2004-04-19 2005-11-24 Soule Protection Surtensions Dispositif de protection contre les surtensions pourvu de moyens de coupure d’arc
EP2466601A1 (de) * 2010-12-20 2012-06-20 Schneider Electric Industries SAS Unterbrechungsvorrichtung mit Monitor mit Lichtbogenunterbrechung
FR2969366A1 (fr) * 2010-12-20 2012-06-22 Schneider Electric Ind Sas Dispositif de coupure a ecran de coupure d'arc
US8686311B2 (en) 2010-12-20 2014-04-01 Schneider Electric Industries Sas Breaking device with arc breaking shield
WO2015058501A1 (zh) * 2013-10-23 2015-04-30 通能顺达科技国际有限公司 一种同步绝缘分隔电力开关装置

Also Published As

Publication number Publication date
DE3875446T2 (de) 1993-03-04
DE3875446D1 (de) 1992-11-26
EP0310469B1 (de) 1992-10-21
FR2621418A1 (fr) 1989-04-07
FR2621418B1 (fr) 1989-12-22

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